baber/WOPTO huggingface dataset:
Patent GB-1100082-A (GB)
Title: Oscillator converter apparatus
IPC: H03D7/12
Filed: 1966-08-05
Abstract: 1,100,082. Transistor frequency-changing circuits. H. H. SCOTT, Inc. 5 Aug., 1966 [10 Feb., 1966], No. 35211/66. Heading H3T. In a self-oscillating frequency changer using a field-effect transistor, feedback of local oscillations through the gate to drain capacity is neutralized and means are provided for restricting the operation of the transistor to the square-law portion of its characteristic. In a radio receiver signals are applied to the gate of oscillator/mixer Q1, either from an external aerial via capacitor C3 or from an internal inductive aerial L1: local oscillations are produced by coupling both source and drain to tuned oscillator coil 3, 4 via separate coupling windings 5, 4 and 1, 2 respectively, while an I.F. output is obtained from the drain by means of transformer T2, the primary of which is connected in series with the coupling winding 1, 2. Feedback through the gate to drain capacity is neutralized by means of capacitor C7, connected between the gate and the top end of oscillator coil 3, 4. Alternatively a field effect transistor with two separate gates may be employed, the neutralizing capacitor being returned to the second gate (Fig. 3, not shown). To restrict the operation of the transistor to the square-law portion of its characteristic, decoupled resistor R1 is connected in series with the source and the amplitude of oscillation is restricted by means of a diode D1 shunting the winding 4, 5: this diode may be supplied with a delay bias, or may be biased from the automatic gain control line (Fig. 2, not shown) to vary the conversion gain.
Patent GB-430259-A (GB)
Title: Improvements in or relating to the manufacture of alpha cellulose
IPC: D21C5/00
Filed: 1933-12-15
Abstract: <PICT:0430259/IV/1> In the manufacture of alpha-cellulose as a substitute for p  cotton pulp for making cellulose esters or for bank note paper &c. from gramineae, e.g. bambooss pulp is boiled for 1 hour at 156 DEG  C. and 4,8 atmospheres pressure and for a few hours at 140-143 DEG  C. and 3 atmospheres pressure in the same autoclave in a lye containing alkaline hydrate, sodium sulphide, sodium sulphite, e.g. respectively in grams per litre 45, 20, 5 and guaiacol; the pulp being then washed with water emulsified with benzol, then washed two or three times with cold water, discharged into a tank 5 wherein it is mechanically agitated and diluted with water; it is then pumped to a thickener 6, to a conical breaker 7 and to vats 8, 9, 10 wherein it is bleached with sodium hypochlorite, washed, subjected to hydrofluoric acid, again washed passed to a thickener 11 and an autoclave 12 in which it is treated with sodium sulphite at 60 DEG  C. and atmosphere pressure and washed in a vat 13 and bleached with hydrogen peroxide or sodium peroxide in a vat 14, passed to a sand-removing device 15 to a centrifugal purifier 16 and to a pulp press 17.  The guaiacol is stated quickly to dissolve the coating of lignin gelatinized by the hydrate, allowing new zones of lignin to be attacked by the lye; in this and in the first boiling, air is expelled with the aid of a circulating pump to avoid oxidation.  One or more rotary purifiers may be interposed between the tank 5 and the thickener 6, to remove any knots left unground by the mill 1.  The vat 9 for the treatment with hydrofluoric acid is lined inside with a plastic material having a rubber basis.  The spent lyes and washing waters from the tank 5 are passed to a tank 21, to a multiple-action evaporator 22, to a rotary oven 23 in which they are calcined, to causticizing vessels 25 and to settling tanks 26.  The whole process is preferably effected automatically.
Patent GB-812538-A (GB)
Title: Process and apparatus for the continuous separation of gas mixtures by means of gas chromatography
IPC: G01N30/86
Filed: 1957-11-13
Abstract: <PICT:0812538/III/1> In the separation of mixtures of gases by the chromatographic method, a series of absorbent columns are used provided with exit pipes to collect the separated components, the gas mixture and carrier gas being admitted to the series of columns in succession, and preferably in amount related to the capacity of each column. The switching of the supply from one column to the next is preferably controlled by a valve controlling the entrance of separated components to exit pipe, which thereby actuates supply to the next column.  The flow of carrier gas may be reversed in the columns after the more rapidly moving component is removed whereby the second component flows down the column.  In a suitable apparatus comprising batteries of separating columns I, II, &c., Fig. 1, each containing 100 columns, the gas mixture, e.g. propylene and butylene, is fed from a reservoir D, and hydrogen as carrier gas from a pipe 4. The hydrogen passes through the columns to exit pipe 5 and valve 6 past a receiver 7 actuating control device 2.  While hydrogen alone passes through to valve 6, the device Z remains inert, but in the presence of propylene the change in conductivity actuates control Z, closing valve 6 and opening valve 8, and the gases flow to an exit 10.  When the propylene flow ceases, leaving hydrogen only, the gas flow is restored to valve 6.  The second component butylene again alters the conductivity of the gas to a predetermined value, whereby valve 6 is closed and valve 11 opens and the gases pass to a collector through an exit 13.  The gas mixture stored in D may have 2 or more components and is fed into each battery I, II, &c., in amount equal to the capacity of the separating columns in each battery.  The control device Z may be actuated by thermal conductivity or density. In a modification, not shown, the second slower moving component may be separated from the bottom of the columns by reversing the flow of inert gas.  The valves may then be controlled by a time switch.
Patent GB-506289-A (GB)
Title: Improvements in or relating to high frequency electrical signalling systems
IPC: H04H20/81
Filed: 1937-12-22
Abstract: 506,289. Distributing music &c. LORENZ AKT.-GES., C. Dec. 22, 1937, No. 35506. Convention date, Dec. 22, 1936. [Class 40 (iv)] In a system for distributing modulated carrier signals over lines, the lines are arranged in groups according to the number of programmes transmitted theroover, and each group is fed through a common amplifier. Two groups of lines 1, 2 are fed through amplifiers 5, 7 which are supplied directly from corresponding transmitters 3, 4, while in addition the transmitter 3 supplies the amplifier 7 through a filter 8. The amplifiers are arranged symmetrically and are shielded.
Patent GB-479791-A (GB)
Title: Improvements in and relating to closure caps for bottles and other containers
IPC: B65D51/24
Filed: 1936-12-28
Abstract: 479,791. Bottle caps &c. LANDAU, R. Dec. 28, 1936, No. 35547. Convention date, Aug. 17, [Class 125 (iii)] A closure cap made from flexibly resilient material, particularly for bottles. or other containers of liquids ,under pressure, comprises a smooth flange which is mechanically forced over the mouth of the container and bent into engagement with a constriction in the head of the container. The marginal portion of the flange is divided up across the whole or the greater part of its width into smooth gripping elements each of which is separated from the next by an arcuate gap, and the gripping elements are of such area that the surface pressure requisite for gas-tight anchoring of the cap is attained while permitting the cap to be readily detached without permanent deformation. Two of the marginal gaps may be disposed diametrically opposite each other, and the edge of one may serve for the application of an opening instrument while the edge of the other acts as a fulcrum for the cap while being prised up. As shown in Fig. 1, the cap of sheet iron or like material consists of a head portion a, and a cylindrical flange portion d which fits over the beaded mouth b on the head of the container c. The lower part of the flange has gripping elements e. Flange d retains a gasket f such as a cork disc over the top of the container. The cap is forced on to the container by a pressing die. The lower portion of the cap is then subjected by the clamping-on device to inwardly directed forces so that the gripping elements e are bent inwards and caused to bear against the curved constriction h. The continuous part of the flange is initially tensioned by forcing the cap on to the head b, and the gripping elements e are thus held fast for the application of the clamping-on device. The cap may be easily removed and re-used since the continuous marginal portion is but slightly bent inwards and is not expanded beyond its yield point in the opening operation, and the gripping elements are capable of temporarily yielding. Preferably, the opening force is applied upon the edge of the flange between two gripping elements, so that the cap pivots about part of the edge of the flange between two gripping elements on the opposite side. The opening operation is facilitated by extending the gap between two gripping elements so that a knife or other implement may be inserted between the gasket f and the rim of the container. The head a. of the cap may be provided with an inwardly projecting rib l for compressing the gasket f. As shown in Fig. 5, the portion of the flange between two gripping elements e may be cut at n and folded over to form a thumb-piece o against which manual force or an opening implement can bear. The flange d may be provided with inwardly projecting bearing ribs p as shown in Fig. 6.
Patent GB-1359196-A (GB)
Title: Method and apparatus for forming a lap side seam tubular body
IPC: B21D51/26
Filed: 1971-07-28
Abstract: 1359196 Making containers and telephone cables; seaming AMERICAN CAN CO 28 July 1971 [25 Sept 1970] 35569/71 Headings B3A and B3V A tubular body with an adhesively-bonded lap side seam is made by applying adhesive along one edge of a blank, bending the opposed edge to form a lip, forming the blank into tubular form and compressing the lap seam to embed the lip in the adhesive. Tubular bodies of circular, elliptical, rectangular or polygonal cross-section may be formed for use as beverage containers or telephone cables. To perform the method, adhesive 18, Fig. 1, is applied by an applicator 16 and the corners of the blank are cropped by dies 22 as the lip 38 is formed by a bending tool 26. Next the blank is given tubular form and the adhesive heated before the seam is pressed between tools 48, 49 and chilled to set the adhesive. A further covering of adhesive 54 may be applied and a top coat.
Patent GB-1293233-A (GB)
Title: Infrared thermograph having an automatic brightness control
IPC: G01J5/10
Filed: 1970-07-23
Abstract: 1293233 Local viewing BARNES ENG CO 23 July 1970 [30 July 1969] 35659/70 Heading H4F In an infra-red thermograph wherein video signals from a detector 20 are displayed on a cathode ray tube 50 the D.C. level of the video signal is automatically controlled so that the displayed brightness corresponding to the maximum or minimum signal level falls within the brightness limits of the display. As described, the peak video signal level is detected at 62, and compared with a reference D.C. level at 66 to derive an error signal which is added to the video signal before it reaches the detector 62, thereby effectively clamping the peak level to the reference D.C. level. The D.C. level is adjusted by potentiometer 68, and preferably set at the maximum level of the dynamic range of the display. Photo-diodes 24 and 26 included in the optical scanning system provide horizontal and vertical sync. signals for the tube 50, and the sync. signals are also used to blank the detector 62 when video signals are absent. A variable D.C. source 42 for manual brightness control may be switched in to replace the automatic brightness control. Circuit details are illustrated in Fig. 2 (not shown).
Patent GB-913656-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
IPC: G21C3/34
Filed: 1959-10-23
Abstract: 913,656. Nuclear fuel elements. BABCOCK & WILCOX CO. Oct. 23, 1959 [Oct. 30, 1958], No. 35964/59. Class 39 (4). In a nuclear reactor fuel element, the separate fuel units are separated by springs. As shown, the fuel element 10 consists of an open-ended can 12 enclosing the cylindrical fuel pins 18 separated by the helicalcoiled springs 20. The coils have a pitch which is long in terms of diameter and may extend along the whole length of the pins. In an alternative form, not shown, the fuel units are separated by short lengths of spring and are held together by external bands in place of the can 12. Specification 913,656 is referred to.
Patent GB-1320978-A (GB)
Title: Textile machinery
IPC: B65H67/04
Filed: 1971-07-30
Abstract: 1320978 Doffing and donning SANT' ANDREA OFFICINE MECCANICHE E FONDERIE SpA 30 July 1971 36008/71 Heading D1J When winding of yarn or sliver onto a bobbin 23 is complete, supporting arms 17 are pivoted by means of a toothed sector 26 and driven gear 29 to a position where they are spread apart by engagement of projections 20 (Fig. 3) on pivoted portions thereof with compression springs 21, releasing the package. Pivoted arms 41 carrying a new bobbin from a dispenser 48 are raised, and the arms 17 collect the bobbin as they are returned to the winding position, their spreading being maintained until they are aligned with the new bobbin by means of cam surfaces 43 on the arms 41. When the new bobbin is in the winding position, in which it is held by a spring 25, an arm 53 is pivoted to cut the sliver and press its end against the bobbin surface. Relative motion between the arms 17 and sector 26, to permit package growth, is limited by adjustable stops 33, 34.
Patent GB-1503164-A (GB)
Title: Thermally responsive actuator devices
IPC: F03G7/06
Filed: 1976-08-04
Abstract: 1503164 Temperature responsive actuating devices SATCHWELL CONTROLS Ltd 4 Aug 1976 [2 Sept 1975] 36081/75 Heading G1D A temperature responsive actuator of the kind comprising a casing 1 containing a thermally expansible material 8, e.g. a wax and copper dust mixture, changes in volume of which displace an actuating element 7, the casing being surrounded by heating 9 or cooling (not shown) means, includes a temperature sensor 12 on the casing controlling means to switch off the heating or cooling means when the element 7 is in its desired position. As shown, the sensor 12, a thermistor is connected to an amplifier 15 which also receives a signal 16 corresponding to the desired position of the element 7. The amplifier output passes to a triac 18 in an A.C. circuit to the heater 9. When the signal from the thermistor is less than that of 16 the triac conducts and the heater receives power. When the reverse is the case, the triac switches the heater off. A steady state is reached dependant in the signal 16. The liquid-solid phase change of the material may be used to produce actuation.
Patent GB-522607-A (GB)
Title: Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence
IPC: C09K11/68
Filed: 1938-12-12
Abstract: 522,607. Luminescent materials. GENERAL ELECTRIC CO., Ltd., and McKEAG, A. H. Dec. 12, 1938, No. 36165. Addition to 495,706, [Group XX]. [Class 39 (i)] To lessen the tendency to blacken in luminescent materials as claimed in Claim 1 or 3 of the parent Specification, or as modified by the inventions set out in Specifications 509,857 and 509,858, an oxide and/or a carbonate are added; the intimate mixture is used in a low pressure mercury vapour lamp. The oxides and/or carbonates of the following are mentioned :-barium, cerium, thorium, strontium, zinc, cerium, thorium, beryllium, and tin, singly or in combination. Between 2 and 10 per cent. of the added compound is proposed, but larger proportions can be used.
Patent GB-878837-A (GB)
Title: Tyre building machine and method of building tyres
IPC: B29D30/18
Filed: 1958-11-11
Abstract: 878,837. Tyre-building machines. TRIGGS, W. W. (Goodyear Tire & Rubber Co.). Nov. 11, 1958, No. 36172/58. Class 144 (1). In a flat-band tyre-building machine the fabric ply ends 6 are pulled axially through the bead cores 8 which clamp the ply ends to the drum shoulders 7 by means of an axially movable stitcher 36, 37 at each end of the building drum 3, the stitcher carrying an inflatable flexible rubber annulus 38 on its periphery and being selectively movable to positions underlying, Fig. 3, and axially outwardly of, Fig. 5, the bead core 8, whereby on inflation of the annulus 38 the ply ends are stitched respectively to the inner periphery, and partially along the axially outer face, of the bead core by deformation of the radially outer wall of the annulus. The stitcher is normally housed within the associated drum shoulder, as in Fig. 1, and is selectively movable to a number of positions axially outwardly of the drum for stitching and turning fabric ply ends around two or more bead cores as in Fig. 9. As shown, the drum 3 is mounted on a rotatable hollow shaft 2 and a stitcher 36, 37 is supported by spokes 35 on a hub 40 which is slidable along the shaft 2 and secured by a pin 28 extending through slots 27 in the shaft 2 to one end of a rod 31 extending through the shaft 2. The other end of the rod 31 is pinned to a peripherally grooved slip collar 33 on the shaft 2 which is movable along the shaft by a lever 34 fulcrummed to an arm 50 of a slide 45 and actuated by a pneumatic piston and cylinder arrangement 56-75. A beadsetting ring 9 having a stepped periphery for use with different diameter bead cores is carried by a drum 10 slidable along the shaft 2 and operable by a pneumatic motor 18-20, the ring 9 being axially retractable within the drum 10 against a spring 15 when a pin 41 thereon is engaged by the hub 27 of the stitcher 36, 37 during the latter's movement to stitching position, Fig. 3. The piston and cylinder arrangement 56-75 effecting the stepped movement of the stitcher 36, 37 comprises a pair of floating cylinders 58, 60 rigidly connected end to end at 59 and each housing a double-acting piston 57, 61 respectively, the piston 57 being connected to the lever 34 and the piston 61 being connected by a rod 62 to a double-acting piston 63 operable in a cylinder 64 which is pivotally mounted on the slide 45. The slide 45 provides for initial adjustment of the collar 33, and thereby the axial position of the stitcher 36, 37, to suit the width of the drum 3. In operation, pressure air is supplied to one or other end of each of the cylinders 58, 60 and 64 in various combinations to provide the desired effective movement of the lever 34 and thus position the stitcher 36, 37 for the required operative step. The flange 37 on the leading edge of the stitcher 36 effects the pulling of the ply ends through the bead core but does not compact them there-against, this being effected by subsequent inflation of the annulus 38. The annulus is deflated for each step of movement of the stitcher 36.
Patent GB-982902-A (GB)
Title: Process for the manufacture of aromatic amines
Inventor: COOKE EDWARD VINCENT
IPC: B01J37/02
Filed: 1962-09-24
Abstract: Aromatic amines of the benzene series are manufactured by liquid phase hydrogenation of the nitro-compounds in presence of a metal catalyst which has been modified by contact with an organic base which (9) is miscible or soluble with the amine under the reaction conditions and (b) has a higher boiling-point and basicity than the amine.  Alkanolamines are the preferred bases, but triethylene, diamine, nicotine and quinoline are also specified.  In examples, aniline and o-toluidine are produced from nitrobenzene and o-nitrotoluene in presence of the respective products, triethanolamine and a Ni/kieselguhr catalyst.  U.S.A. Specification 2,292,879 is referred to.
Patent GB-175161-A (GB)
Title: Improvements in or relating to boots or shoes
IPC: A43B21/24
Filed: 1920-12-24
Abstract: 175,161. Batholemew, P. J., Petch, M. S., and Quant, P. F. Dec. 24, 1920. Foot-arch supports.-A boot or shoe affording additional support to the arch of the foot is made with an internal support 1 of leather which extends from the heel round the inner side of the heel to the great toe joint, and which is made thinner at the top than at the bottom. An external extra support is provided by extending the inner side of the heel, as shown at 2, on the under side of the shoe.
Patent GB-1432026-A (GB)
Title: Multiple exposure device in a photographic camera
IPC: G03B17/30
Filed: 1973-07-30
Abstract: 1432026 Multiple exposure devices ASAHI KOGAKU KOGYO KK 30 July 1973 [28 July 1972] 36230/73 Heading G2A In a camera in which the transmission is coupled to the film transport mechanism by a clutch, the clutch can be disabled and the rotation of the film take-up spool blocked so that multiple exposures may be made. The operator normally rotates the shaft 4 to transport the film and simultaneously cock the shutter, an enlarged portion of shaft 4 engaging frictionally with the take-up spool 3 so that this rotates with the shaft. Rotation of shaft 4 also rotates, via a gear train 5, 6, 7, 8, a member 9 which has a clutch engagement with a ring 10 fixed to a shaft 2 seen more clearly in Fig. 5 (not shown). Shaft 2 rotates within and can engage with a sprocket 1, so that when the clutch is engaged the member 9 rotates the sprocket, which transports the film. For rewinding the film, a rewind button 17 is pushed upwardly, which disengages the clutch members 9, 10. The end 13a of a spring-loaded lever 13 latches into a narrowed part 2a of shaft 2, and so retains the clutch members in the disengaged position even when button 17 is released, so enabling the film to be rewound in the reverse direction. If multiple exposures are required, a multiple exposure button 21 is pressed upwards. An extension 21b of button 21 engages and pivots a blocking lever 24 against its spring-loading, so that an end 24a thereof enters into engagement with a toothed flange 3a of spool 3, so locking spool 3 against movement. Although button 7 can be pushed upwards independently, it is pushed upwards by extension 21b of button 21 as this is pushed upwards. Thus in addition to locking film spool 3, the multiple exposure button also disengages the clutch 9, 10 so that when the film transport lever is turned, the film remains absolutely stationary, and only the shutter cocking takes place. Consequently when the shutter is next actuated, the exposure is superimposed on the previous one. Once the shutter is cocked, button 21 can be released, when it is returned by a spring to its original position. The blocking lever 24 is returned to its non- blocking position, and the clutch members are again engaged. If a film transport operation has been only partially made, a safety lever 27 prevents the multiple exposure button from being operated.
Patent GB-521031-A (GB)
Title: Improvements in rotary roller pumps
IPC: F04C2/18
Filed: 1938-12-13
Abstract: 521,031. Rotary pumps. FILLIOL, L. A. D. Dec. 13, 1938, Nos. 36309 and 36310. Convention dates, Dec. 21, 1937, and Nov. 15, 1938. [Class 110 (ii)] The teeth of gear wheel pumps, of both internally and externally meshing types, are formed of cylindrical rollers 1 mounted in cages 5 upon the rotors 6. The rotors are interconnected by ordinary gear wheels 8 and these may be adapted to act also as a lubricating pump to supply oil to the rollers when the main pump is being used to pump gases. The cages may be formed, Fig. 9, to engage as toothed wheels. In this case, the rollers provide only sealing contact with the stator. The rollers may be arranged to mesh with intervening portions of the cages as shown in Fig. 11. The stator may be made in two parts united by bolts 22, Fig. 4. This construction permits the taking up of back lash. The cages are frictionally secured upon the rotors or the rotors may be formed of several closely wound spring coils which grip the driving shaft and the inner surface of the cages.